AF-C, AF-D, Center grop or Spot/center AF point, release priority. Also be very careful to keep the same area of the subject within the active/center AF point, so that the lens doesn't have to do small depth adjustments in addition to the tracking of the subject. I have found that good camera technique might double my hit rate. Mostly I am waiting for the right moment, using single frame advance, but short bursts might also work well. This is a matter of shooting style. Spray & pray doesn't work for me.